Functional characteristics of no-load tester for power transformer

Functional characteristics

2. It can measure no-load current, no-load loss, impedance voltage and short-circuit loss of various types of transformers.

3. Large screen, high brightness LCD display, full Chinese menu and operation hints to achieve friendly man-machine dialogue, easy to operate.

4. Users can print test data in real time.

5. Using digital synchronous sampling technology, the true RMS of voltage, current, power and other parameters of three-phase electrical equipment can be accurately measured, and the measurement accuracy is 0.2 level.

6. It can replace nine pointer meters of the same grade, and is an ideal replacement product for the traditional electric quantity measuring instruments.

Technical Indicators of Power Transformer Empty Load Tester

1. Input characteristics: Voltage measurement range: 0-750V wide range.

Current measurement range: 0 ~ 100A internal automatic switching range.

2. Accuracy: Voltage and current: +0.2%

Power: +0.2% (COS_ > 0.1), +0.5% (0.02 < cos_ < 0.1)

3. Working temperature: -10C~+40 ~C

4. Working power supply: AC 160V~265V

5. Insulation: The insulation resistance of the input voltage and current to the housing is greater than or equal to 100M?. The input end of the working power supply withstands power frequency 2KV (RMS) between the outer shells, which lasts for 1 minute.

6. Volume: 45 cm x 30 cm x 21 cm

7. Weight: 3Kg

Parameters of no load tester for power transformer

1. The product fully conforms to the national standard "Verification Regulations of JJG124-93 Amperometer, Voltmeter, Power Meter and Resistor Meter"

The overall accuracy of the instrument is 0.5 grade.

2. Input characteristics

Active part: Voltage measurement range: 0 ~ 10V

Current measurement range: 0-10A

Passive part: Voltage measurement range: 0-750V wide range

Current measurement range: all automatic switching ranges within 0-100A

3. Accuracy

Voltage: +0.2%

Current: +0.5%

Power: +0.5%(Cos>0.1), +1.0%(0.02)

Accuracy of volume measurement: +0.5%

4. Batteries can be charged and discharged no less than 8000 times

5. Number of battery full test benches: no less than 500

6. Transformer Capacity Test Range: 20KVA~100000KVA

7. Working temperature: - 15 ~45 ~

8. Charging Power Supply: AC 160V~260V

9. Insulation: _. Insulation resistance of voltage and current input terminals to the housing is greater than or equal to 100M.

Power Transformer Empty Load Tester

1. Transformer capacity-characteristic tester can measure transformer capacity, short-circuit loss and no-load loss. Its test results fully meet the requirements of transformer test standards of GB1094.1-2003 Power Transformer and GB/T6451 Three-phase Oil-immersed Power Transformer Technical Parameters and Requirements.

2. The transformer capacity-characteristic tester itself can produce three-phase precise test AC power supply, output three-phase standard sine wave signal with distortion less than 0.2%. It has built-in high-efficiency rechargeable batteries. It does not need any external power supply and auxiliary equipment such as voltage regulator or or booster when testing transformer capacity and short-circuit loss. It can continuously test more than 500 transformers at a time.

3. The instrument has built-in battery voltage monitoring function, which shows the measured voltage value of battery pack and the percentage of residual electricity. It prompts users to charge at low voltage, so as to avoid the influence of low battery voltage on test results.

4. For national standard transformers, the instrument should be able to automatically judge the form of transformers without looking up tables.

5. It does not need external power supply to measure the capacity of various power transformers. It can also measure the capacity and empty load of electric furnace transformer and rectifier.

6. It can accurately measure the no-load loss of Y/Yn0 type three-phase distribution transformer with single-phase to 220V power supply directly and determine the form. It does not need external voltage regulator and other equipment.

7. The range of testable capacity is large: 20-100 000 KVA can be measured directly.

8. The high voltage side voltage of the test transformer should cover all voltage levels in China, including 0.1KV, 0.4KV, 1KV, 3KV, 6KV, 6.3KV, 10KV, 10.5KV, 11KV, 35KV, 60KV, 63KV, 66KV, 110KV, 220KV, 500KV, etc.

9. Voltage circuit is limited to 750V.

10. The current loop is limited to 100 A.

11. The excess limits of voltage and current can be extended to any range through external voltage transformers and current transformers.

12. It has the capacity test function of single-phase transformer and the test range is 5-10000KA.

13. The current test range is less than 5mA, avoiding testing some small-capacity high-voltage distribution transformers because the current is too small to be measured.

14. The input range of impedance voltage is large, which meets the range of 2%~18%.

15. The new harmonic testing function can analyze the distribution of harmonic content in the test process, and has the same function as the high-performance power analyzer.

16. The waveform display function can visually display the distortion degree of the test waveform.

17. Vector analyzer function, effectively check the wrong connection of the test.

18. Large screen true color 7.2 inch LCD can display three-phase voltage, three-phase current, three-phase power, average voltage, average current, total power, test results and correction results on the same screen.

19. Conductive silica gel keys have good handle, long life and easy operation.

20. The instrument has the function of on-site printing, which can print out the field test data completely.

21. It is equipped with 232 serial port and background communication management software, which can upload the test results to the computer for unified management.